1<?php 2 3/* 4 * This file is part of SwiftMailer. 5 * (c) 2004-2009 Chris Corbyn 6 * 7 * For the full copyright and license information, please view the LICENSE 8 * file that was distributed with this source code. 9 */ 10 11//@require 'Swift/CharacterReader.php'; 12 13/** 14 * Analyzes US-ASCII characters. 15 * @package Swift 16 * @subpackage Encoder 17 * @author Chris Corbyn 18 */ 19class Swift_CharacterReader_UsAsciiReader 20 implements Swift_CharacterReader 21{ 22 /** 23 * Returns the complete charactermap 24 * 25 * @param string $string 26 * @param int $startOffset 27 * @param string $ignoredChars 28 */ 29 public function getCharPositions($string, $startOffset, &$currentMap, &$ignoredChars) 30 { 31 $strlen=strlen($string); 32 $ignoredChars=''; 33 for( $i = 0; $i < $strlen; ++$i) 34 { 35 if ($string[$i]>"\x07F") 36 { // Invalid char 37 $currentMap[$i+$startOffset]=$string[$i]; 38 } 39 } 40 return $strlen; 41 } 42 43 /** 44 * Returns mapType 45 * @int mapType 46 */ 47 public function getMapType() 48 { 49 return self::MAP_TYPE_INVALID; 50 } 51 52 /** 53 * Returns an integer which specifies how many more bytes to read. 54 * A positive integer indicates the number of more bytes to fetch before invoking 55 * this method again. 56 * A value of zero means this is already a valid character. 57 * A value of -1 means this cannot possibly be a valid character. 58 * @param string $bytes 59 * @return int 60 */ 61 public function validateByteSequence($bytes, $size) 62 { 63 $byte = reset($bytes); 64 if (1 == count($bytes) && $byte >= 0x00 && $byte <= 0x7F) 65 { 66 return 0; 67 } 68 else 69 { 70 return -1; 71 } 72 } 73 74 /** 75 * Returns the number of bytes which should be read to start each character. 76 * @return int 77 */ 78 public function getInitialByteSize() 79 { 80 return 1; 81 } 82 83} 84